Pipeline foundation and foundation trench support integrated shaped template system and construction method thereof

Abstract

The application provides a pipeline foundation and foundation trench support integrated forming template system and a construction method thereof, and belongs to the technical field of pipeline engineering; the system comprises support plates, telescopic mechanisms and foundation templates; the support plates are oppositely arranged; the telescopic mechanisms are telescopically arranged between the support plates; and the foundation templates are arranged between the support plates and detachably connected with the support plates. The support structure of the pipeline foundation trench and the pipeline foundation template system are connected in one body, so that the support plates, the telescopic mechanisms and the foundation templates can be completed in the same construction stage, the construction process is simplified, the process connection time is shortened, and the construction efficiency is greatly improved; the layout is more scientific and reasonable, and the construction is more convenient.

Description

Technical Field

[0001] This invention belongs to the field of pipeline engineering technology, and in particular relates to a standardized template system for integrated pipeline foundation and trench support and its construction method. Background Technology

[0002] Pipeline foundation construction and trench support are core components of municipal stormwater and sewage pipe network engineering. Pipeline foundations require formwork casting to create a stable support structure, directly impacting pipeline installation accuracy and stress stability. Trench support is crucial for ensuring construction safety, especially with deep trenches for large-diameter pipelines. Currently, the industry commonly adopts a "formwork and protection separation" construction model, where separate formwork is used for pipeline foundation casting, while independent structures such as sheet piles and soil nailing walls are used for sidewall support of the pipeline trench. This model, because the pipeline foundation formwork and trench support structure are set up independently, requires phased completion of support structure construction and formwork installation. This results in numerous overlapping procedures, many connection points, and conflicting space requirements, leading to a cumbersome construction process and severely impacting construction efficiency. Furthermore, it consumes a large amount of materials, which are difficult to reuse, resulting in significant resource waste. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides an integrated prefabricated template system for pipeline foundation and trench support, along with its construction method. This simplifies the construction process, shortens the connection time between procedures, and significantly improves construction efficiency. The layout is more scientific and reasonable, and construction is more convenient.

[0004] The technical solution adopted in this invention is: an integrated standardized template system for pipeline foundation and trench support, comprising:

[0005] Support plates, wherein the support plates are arranged opposite to each other;

[0006] A telescopic mechanism is telescopically disposed between the support plates;

[0007] The basic template is placed between the support plates and is detachably connected to the support plates.

[0008] Furthermore, the telescopic mechanism includes a sleeve, a lead screw, and a stopper. The two ends of the sleeve are respectively threaded to the lead screw, and the stopper is connected to the end of the lead screw away from the sleeve and is detachably connected to the support plate.

[0009] Furthermore, the support plate also includes a locking assembly, which includes a positioning bracket and a slider. The positioning bracket is provided with a limiting groove, and the slider is slidably connected to the limiting groove and detachably connected to the abutment.

[0010] Furthermore, the abutment is connected to the slider by bolts.

[0011] Furthermore, it also includes connectors, the two ends of which are detachably connected to the foundation template and the support plate on their respective sides that are close to each other.

[0012] Furthermore, the support plate is provided with a first slot, the foundation template is provided with a corresponding second slot, and the two ends of the connector are respectively engaged with the first slot and the second slot.

[0013] Furthermore, both the first and second slot components include at least two sets at different height positions.

[0014] Furthermore, both the first and second slot components are provided with slots, and the connector includes bent portions disposed at both ends thereof, the bent portions being inserted into the slots.

[0015] Furthermore, the slot openings of the slots face the tops of the support plate and the base template, respectively; the bent portions are parallel to the corresponding support plate and the base template.

[0016] The construction method of the integrated prefabricated formwork system for pipeline foundation and trench support, as described above, includes the following steps:

[0017] Excavation of the foundation trench and pouring of the concrete foundation layer;

[0018] Install support plates and telescopic mechanisms;

[0019] Adjust the telescopic mechanism to tighten the support plate;

[0020] Install the base template using connectors;

[0021] Pour concrete for the pipe foundation;

[0022] Maintenance and removal of basic formwork.

[0023] The advantages and positive effects of this invention are:

[0024] (1) This application integrates the support structure of the pipeline trench with the pipeline foundation template system. The support plate and the expansion mechanism form the support system of the pipeline foundation template. Therefore, it is not necessary to set up a separate support structure for the pipeline foundation template. The support plate, expansion mechanism and foundation template can be completed in the same construction stage, which greatly simplifies the construction process, shortens the process connection time, and greatly improves the construction efficiency. It saves the space required to set up a separate pipeline foundation template support structure. The layout is more scientific and reasonable, and the construction is more convenient.

[0025] (2) By setting up the telescopic mechanism, the spacing between the support plates can be adjusted according to the width of the trench, which improves the applicability of the integrated template system for pipeline foundation and trench support; by adjusting the length of the telescopic mechanism, the support plates can be pressed against the side wall of the trench, which is convenient and reliable, and ensures the overall stability of the support plates under stress.

[0026] (3) By setting the first slot, the second slot and the connector, the basic template can be conveniently installed in the set position and connected with the support plate to form a stable template system with high connection strength, simple and quick operation, and can greatly improve the installation efficiency. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the use of a specific embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the connection between the support plate and the telescopic mechanism in a specific embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the connector connection structure according to a specific embodiment of the present invention.

[0031] In the picture:

[0032] 1. Support plate; 11. First slot; 2. Telescopic mechanism; 21. Screw; 22. Abutment; 23. Sleeve; 24. Adjustment hole; 3. Locking assembly; 31. Sliding block; 32. Positioning bracket; 4. Foundation template; 41. Second slot; 5. Connector; 51. Bending part; 6. Concrete pad; 7. Pipe foundation; 8. Pipe; 9. Water-swellable sealing strip. Detailed Implementation

[0033] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0034] like Figure 1As shown in the figure, this embodiment of the invention proposes an integrated prefabricated template system for pipeline foundation and trench support, including support plates 1, telescopic mechanisms 2, and foundation templates 4. The support plates 1 are arranged opposite each other, with the opposite sides of the two support plates 1 contacting the soil of the trench sidewall. The telescopic mechanism 2 is telescopically positioned between the support plates 1, abutting against the opposite side of the support plates 1, thereby forming a safety protection structure together with the support plates 1 to effectively support the trench sidewall formed by excavation. The foundation template 4 is placed between the support plates 1 and detachably connected to them, used to construct the pouring space for the pipeline foundation 7. Through the above technical solution, the support structure of the pipeline trench is integrated. The support plate 1 and the expansion joint 2 are integrated with the pipe foundation 7 formwork 4 system. The support plate 1 and the expansion joint 2 form the support system of the pipe foundation 7 formwork 4. Therefore, there is no need to set up a separate support structure for the pipe foundation 7 formwork 4. The support plate 1, the expansion joint 2 and the foundation formwork 4 can be completed in the same construction stage, which greatly simplifies the construction process, shortens the process connection time and significantly improves the construction efficiency. The overall system forms a structure in which the support plate 1 is located on the outside and the expansion joint 2 and the foundation formwork 4 are placed between the support plate 1. This saves the space required to set up a separate support structure for the pipe foundation 7 formwork 4. The layout is more scientific and reasonable, the construction is more convenient and significantly improves the construction efficiency.

[0035] It should be noted that the foundation trench is excavated and shaped along the extension direction of pipe 8, such as... Figure 2 As shown, multiple support plates 1 are spliced ​​along the length of the trench to form comprehensive protection for the sidewalls of the trench. Each support plate 1 is fixed in the trench by a telescopic mechanism 2. By setting the telescopic mechanism 2, the spacing between the support plates 1 can be adjusted according to the width of the trench, which improves the applicability of the integrated template system of pipeline foundation 7 and trench support. By adjusting the length of the telescopic mechanism 2, the support plates 1 can be pressed against the sidewalls of the trench. The adjustment is convenient and reliable, ensuring the overall stability of the support plates 1 under stress.

[0036] Similarly, along the length of the foundation trench, multiple foundation templates 4 are spliced ​​together to form the template system of the pipe foundation 7; the foundation template 4 and the support plate 1 have a set angle, which is set according to the shape of the pipe foundation 7; for example, when the cross-sectional shape of the pipe foundation 7 is a rectangle with a pipe groove at the top, the foundation template 4 is set in the vertical direction, and the support plate 1 is preferably set in the vertical direction, and the two are parallel; when the cross-sectional shape of the pipe foundation 7 is a trapezoid with a pipe groove at the top, the foundation template 4 is inclined from bottom to top towards the middle of the foundation trench, at which time the foundation template 4 and the support plate 1 form an angle.

[0037] Preferably, the bottom end of the support plate 1 has a pointed protrusion structure, so that the support plate 1 can be inserted into the soil at the bottom of the foundation trench during installation, thereby improving the stability of the support plate 1.

[0038] Preferably, the support plate 1 is made of high-strength shaped steel plate, which has good overall rigidity, is not easy to deform, has high flatness, can effectively resist the side pressure of the foundation trench, reduce the risk of collapse and displacement, and ensure the safety of the foundation trench support structure; at the same time, it is easy to install and disassemble and can be reused.

[0039] Furthermore, in the embodiments of this application, such as Figure 1 As shown, the telescopic mechanism 2 includes a sleeve 23, a lead screw 21, and a stopper 22. Both ends of the sleeve 23 are threadedly connected to the lead screw 21. The stopper 22 is connected to the end of the lead screw 21 away from the sleeve 23 and is detachably connected to the support plate 1. The sleeve 23 is a hollow tubular structure with internal threads, and the lead screw 21 has matching external threads. By rotating the sleeve 23, the connection length between the sleeve 23 and the two lead screws 21 can be adjusted, thereby adjusting the overall length of the telescopic mechanism 2 so that it can press against the support plate 1 to form a stable support structure. The stopper 22 is located at the other end of the lead screw 21 and is used to contact the support plate 1, realizing a detachable connection between the telescopic mechanism 2 and the support plate 1, simplifying the installation and removal of the support plate 1 and the telescopic mechanism 2, and enabling their interchangeable use. Meanwhile, the abutting member 22 and the support plate 1 have a certain contact area, which can prevent the telescopic mechanism 2 from sliding relative to the support plate 1 through friction when the telescopic mechanism 2 abuts the support plate 1, thereby improving the stability of the connection between the two; it can also prevent the local stress of the support plate 1 from being too concentrated.

[0040] In this embodiment, the foundation trench has a certain depth, and the pipe foundation 7 is set at the bottom of the foundation trench. The height of the support plate 1 is adapted to the depth of the foundation trench, and its bottom is buried in the foundation trench soil. The top or middle part is tightened and fixed by several telescopic mechanisms 2. The number and position of the telescopic mechanisms 2 can be set as needed. Preferably, at least two sets of telescopic mechanisms 2 with different heights are set. Each set includes at least two telescopic mechanisms 2 and is set along the length direction of the support plate 1 at the edge of the support plate 1 to improve the stability of the support plate 1 and ensure that it is stably fixed in the foundation trench, forming an effective support for the side wall of the foundation trench.

[0041] Furthermore, in this embodiment, the support plate 1 further includes a locking component 3, which includes a positioning slot and a slider. The positioning slot is provided with a limiting groove, and the slider is slidably connected to the limiting groove and detachably connected to the abutment member 22. By setting the positioning slot, the slider can be more easily inserted into or removed from the limiting groove, thereby realizing the quick installation and removal of the telescopic mechanism 2; a single person can complete the operation, greatly shortening the installation and removal time of the entire system and reducing the difficulty of operation.

[0042] In a preferred embodiment, the abutment 22 is connected to the slider by bolts. When installing the telescopic mechanism 2, the slider is slid into the limiting groove, and then the sleeve 23 is rotated to extend the telescopic mechanism 2 and press the abutment 22 against it, thereby pressing the slider against the limiting groove and fixing the slider. When it is necessary to remove the slider, the sleeve 23 is rotated to shorten the telescopic mechanism 2, and then the slider is moved along the limiting groove.

[0043] In this embodiment, the support plate 1 includes a support plate 1 body. The positioning bracket can be bolted to the support plate 1 body or welded to the support plate 1 body. The limiting groove is set along the height direction of the support plate 1. It has a sliding entrance at its upper or lower end and an extension opening at its end away from the support plate 1 body. The sliding entrance allows the slider to pass through. The shape of the abutment 22 is smaller than that of the slider. The size of the extension opening allows the abutment 22 to pass through, thereby forming an extension opening that engages with the slider. With this setting, during installation, the slider can be easily moved from the upper or lower sliding entrance into the limiting groove to realize the sliding engagement between the limiting groove and the telescopic mechanism 2, improving the convenience and reliability of the connection between the two.

[0044] In one specific embodiment, the abutment 22 is flat and welded to one end of the lead screw 21, and is connected to the slider by bolts. This technical solution allows the slider to be connected to telescopic mechanisms 2 of different specifications, enabling the telescopic mechanism 2 to meet the usage requirements of trenches of different widths.

[0045] Preferably, the lead screw 21 is provided with scale markings so that the operator can adjust the length of the telescopic mechanism 2 according to the scale markings; the sleeve 23 is provided with an adjustment hole 24 in the middle, and the sleeve 23 can be rotated by inserting a pry bar or other tools into the adjustment hole 24 to adjust the length of the telescopic mechanism 2.

[0046] Furthermore, in this embodiment, the integrated template system for the pipeline foundation 7 and the trench support also includes a connector 5, the two ends of which are detachably connected to the foundation template 4 and the support plate 1 on their respective adjacent sides. By providing the connector 5, the foundation template 4 can be easily installed in a designated position and connected to the support plate 1 to form a stable template system.

[0047] In this embodiment, the connector 5 has a certain rigidity, which can withstand the pressure and tension brought about by the movement of the foundation formwork 4 toward or away from the support plate 1 before the concrete is poured, and can also withstand the lateral pressure of the foundation formwork 4 during the concrete pouring, and further transmit the pressure to the support plate 1 to form an overall force system.

[0048] Specifically, the support plate 1 is provided with a first slot 11, and the foundation template 4 is provided with a corresponding second slot 41. The two ends of the connector 5 are respectively engaged with the first slot 11 and the second slot 41. The first slot 11 and the second slot 41 are arranged in a one-to-one correspondence. Preferably, regardless of the relative position and angle between the support plate 1 and the foundation template 4, the first slot 11 and the second slot 41 are set at the same height, so that the connector 5 is horizontal, the force is more reasonable and stable, and the component force generated by the oblique force is avoided, which causes the connector 5 to deform or slip off. At the same time, this arrangement makes it easier to control the installation quality of the connector 5 and ensure that the connection between the two is firm.

[0049] Furthermore, in the above embodiments, the first slot 11 and the second slot 41 each include at least two sets at different heights, so that the single support plate 1 and the single foundation template 4 are connected by at least two sets of connectors 5 at different heights, forming a multi-point connection and upper and lower coordination, which significantly enhances the connection rigidity and overall stability between the support plate 1 and the foundation template 4, effectively preventing the foundation template 4 from overturning, shifting or undergoing local deformation; more importantly, by constraining the foundation template 4 at multiple points through connectors 5 at different heights, the foundation template 4 can be subjected to more uniform force in the height direction, avoiding phenomena such as bulging, deformation, and misalignment caused by local force concentration, and ensuring the forming quality and construction accuracy of the pipeline foundation 7.

[0050] In a specific embodiment, such as Figure 1 As shown, the first slot 11 and the second slot 41 are each provided in two sets, each set including three, which are distributed along the length of the support plate 1 or the foundation template 4 at both ends and the middle of the support plate 1, and correspond one-to-one with each other.

[0051] In a specific embodiment, such as Figure 1 , Figure 4 As shown, both the first slot 11 and the second slot 41 are provided with slots. The connector 5 includes bent portions 51 at both ends, which are inserted into the slots. The bent portions 51 and the slots form a plug-in fit, which can quickly achieve precise alignment between the connector 5 and the slot, and limit the deviation of the bent portions 51. The connection structure of the two can effectively withstand tension and pressure, and is not prone to slippage or misalignment. The overall connection strength is high. The operation is simple and quick, which can greatly improve the installation efficiency.

[0052] Preferably, the slot openings face the tops of the support plate 1 and the base template 4 respectively; the bent portion 51 is parallel to the corresponding support plate 1 and base template 4 respectively, so that the bent portion 51 is more compatible with the slot and improves the connection stability between the two; the bent portion 51 can be connected to the slot by inserting it downward into the slot, and the connection between the two can be released by pulling it upward, which can better prevent the bent portion 51 from slipping out of the slot.

[0053] In one specific embodiment, both the first slot 11 and the second slot 41 are made of rectangular steel pipes, with one side welded to the support plate 1 or template, and the upper and lower ends of the pipes having slots respectively. In this embodiment, the support plate 1 is arranged vertically, and the foundation trench template is arranged inclined to the support plate 1, with its bottom end extending to the bottom of the support plate 1 and its upper end inclined away from the support plate 1. The connector 5 includes a main body and a bent portion 51, one of which is perpendicular to the main body and is parallel to the support plate 1 when it is inserted into the slot of the first slot 11. The other bent portion 51 has an angle with the main body, which is the same as the angle between the foundation trench template and the horizontal direction, and is parallel to the foundation trench template when it is inserted into the slot of the second slot 41.

[0054] Furthermore, an anti-stick coating is applied to the surface of the foundation formwork 4 facing away from the protective plate 1, which can effectively isolate the concrete from the foundation formwork 4; water-swellable sealing strips are pasted between adjacent foundation formwork 4, and can also be reinforced with bolts to prevent concrete leakage.

[0055] In this embodiment of the application, the construction method of the integrated formwork system for the pipeline foundation 7 and the trench support includes the following steps:

[0056] S1. Excavation of the foundation trench and pouring of concrete cushion layer 6;

[0057] Specifically, based on the design axis, elevation, and excavation dimensions of the pipeline foundation 7, the foundation edge line, formwork installation control line, and excavation line are marked out; after the excavation reaches the design elevation, the bottom of the pit is leveled and a concrete cushion layer 6 is poured; then, a level and a total station are used to verify the elevation of the foundation trench and the axis of the pipeline foundation 7.

[0058] S2. Install support plate 1 and telescopic mechanism 2;

[0059] Specifically, according to the size of the foundation trench, support plates 1 of corresponding specifications and quantities are made, and two support plates 1 are connected by a telescopic mechanism 2 to form a preliminary protective structure frame; when installing the telescopic mechanism 2, the spacing between the two support plates 1 is made equal to the design spacing after installation; then the protective structure frame is hoisted as a whole to the preset positions on both sides of the foundation trench, ensuring that the inner bottom of the support plate 1 is aligned with the edge line of the concrete pad 6, and the outer side is tightly attached to the side wall of the foundation trench.

[0060] S3. Adjust the telescopic mechanism 2 to press against the support plate 1;

[0061] The rotating sleeve 23 drives the abutment 22 to move, and the expansion and contraction are precisely controlled by the scale markings on the screw 21, so that the net distance between the inner sides of the support plate 1 is consistent with the design width of the concrete cushion layer 6, and the support plate 1 abuts against the side wall of the foundation trench; then a laser rangefinder is used to detect the distance between the support plates 1.

[0062] S4. Install the foundation template 4 using connector 5;

[0063] The bent portion 51 of the connector 5 is inserted into the first slot 11 and the second slot 41 respectively, so that the foundation template 4 is in the set position; then the total station is used to detect the axial deviation of the foundation template 4, the straightedge is used to detect the flatness of the foundation template 4, and the level is used to detect the top surface elevation; at the same time, the earth pressure sensor is used to detect the support bearing capacity of the support plate 1 to ensure that the safety requirements of the foundation trench sidewall support are met. If they are not met, the telescopic mechanism 2 is used for adjustment.

[0064] S5. Pour concrete for the pipe foundation;

[0065] A layered pouring method was adopted, controlling the thickness and pouring speed of each layer. An immersion vibrator was used for compaction to avoid direct impact on the foundation formwork 4. During the pouring process, the deformation and support stability of the foundation formwork 4 were monitored in real time. If any abnormality was found, the pouring was immediately stopped and the formwork was reinforced.

[0066] S6. Maintenance and removal of basic formwork 4;

[0067] After the concrete for the pipe foundation 7 is poured, it is covered with a film and watered for curing. Once the concrete for the pipe foundation 7 has reached the set strength, the connector 5 is removed first, followed by the removal of the foundation formwork 4. The formwork is then shortened by adjusting the telescopic mechanism 2, and the entire protective structure frame is then hoisted to the next section for reuse.

[0068] The advantages and positive effects of this invention are:

[0069] (1) This application integrates the support structure of the pipeline trench with the pipeline foundation template system. The support plate and the expansion mechanism form the support system of the pipeline foundation template. Therefore, it is not necessary to set up a separate support structure for the pipeline foundation template. The support plate, expansion mechanism and foundation template can be completed in the same construction stage, which greatly simplifies the construction process, shortens the process connection time, and significantly improves the construction efficiency. It saves the space required to set up a separate pipeline foundation template support structure. The layout is more scientific and reasonable, the construction is more convenient, and the construction efficiency is significantly improved.

[0070] (2) By setting up the telescopic mechanism, the spacing between the support plates can be adjusted according to the width of the trench, which improves the applicability of the integrated template system for pipeline foundation and trench support; by adjusting the length of the telescopic mechanism, the support plates can be pressed against the side wall of the trench, which is convenient and reliable, and ensures the overall stability of the support plates under stress.

[0071] (3) By setting the first slot, the second slot and the connector, the basic template can be conveniently installed in the set position and connected with the support plate to form a stable template system with high connection strength, simple and quick operation, and can greatly improve the installation efficiency.

[0072] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A standardized template system for integrated pipeline foundation and trench support, characterized in that, include: Support plates, wherein the support plates are arranged opposite to each other; A telescopic mechanism is telescopically disposed between the support plates; The basic template is placed between the support plates and is detachably connected to the support plates.

2. The integrated prefabricated template system for pipeline foundation and trench support according to claim 1, characterized in that: The telescopic mechanism includes a sleeve, a lead screw, and a stopper. The two ends of the sleeve are threaded to the lead screw, and the stopper is connected to the end of the lead screw away from the sleeve and is detachably connected to the support plate.

3. The integrated prefabricated template system for pipeline foundation and trench support according to claim 2, characterized in that: The support plate also includes a locking assembly, which includes a positioning bracket and a slider. The positioning bracket is provided with a limiting groove, and the slider is slidably connected to the limiting groove and detachably connected to the abutment.

4. The integrated prefabricated template system for pipeline foundation and trench support according to claim 3, characterized in that: The abutment is connected to the slider by bolts.

5. The integrated prefabricated template system for pipeline foundation and trench support according to any one of claims 1-4, characterized in that: It also includes connectors, the two ends of which are detachably connected to the foundation template and the support plate on the side that are close to each other.

6. The integrated prefabricated template system for pipeline foundation and trench support according to claim 5, characterized in that: The support plate is provided with a first slot, the foundation template is provided with a corresponding second slot, and the two ends of the connector are respectively engaged with the first slot and the second slot.

7. The integrated prefabricated template system for pipeline foundation and trench support according to claim 6, characterized in that: Both the first and second slot components include at least two sets at different height positions.

8. The integrated prefabricated template system for pipeline foundation and trench support according to claim 7, characterized in that: Both the first and second slot components are provided with slots, and the connector includes bent portions at both ends thereof, which are inserted into the slots.

9. The integrated prefabricated template system for pipeline foundation and trench support according to claim 8, characterized in that: The slot openings of the slots face the tops of the support plate and the base template, respectively; the bent portions are parallel to the corresponding support plate and the base template.

10. The construction method of the integrated prefabricated formwork system for pipeline foundation and trench support as described in any one of claims 1-9, characterized in that, Includes the following steps: Excavation of the foundation trench and pouring of the concrete foundation layer; Install support plates and telescopic mechanisms; Adjust the telescopic mechanism to tighten the support plate; Install the base template using connectors; Pour concrete for the pipe foundation; Maintenance and removal of basic formwork.

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